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Problem with double frame acquisition (PIV, Dantec-DynamicStudio)

Hello, here is my problem  : I’m doing experimental measurements of a flow using PIV measurements. For the images acquisition I’m using DynamicStudio (Dantec).

I think I have a problem of synchronisation when I’m using double frame mode. When I apply PIV analysis, I get erroneous vectors for image 1 till 4 but from image 5, I get good results (problem is detected for the first images (1 to 4)). You can see an example of vectors image (from 1 to 4) and the vectors image 5 (where vectors are OK).  Once checking the two frames (Frame1 and frame2), I found out that in frame 2 there is a kind of “out synchronisation” (or maybe something else, I don’t know where it comes from !). Here’s images : from 1 to 4 : frame 1 and frame 2 (where all frames 1 are OK but Frame 2 NO), whereas for image 5 (and others) : Frame 1 and Frame 2 are normal.

Sorry for being so long, I hope You get my issue. Thanks for your help

Cheers

 

Souria

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Hello Souria,

 

Shouldn't you address your question to Dantec directly? I don't see anywhere you mentioning any NI's product, am I wrong?

 

Thanks

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